a stark reminder that rozalynn and ryder are forbidden to live with their parents. so they've never spent the night here? >> never. >> reporter: cynthia wants those bedtimes back. wants to clear her husband's name. >> when he was arrested, i started to take my vows extremely seriously. there was no more space for doubt. he couldn't fight for himself. i needed to step up and be his voice and figure out what actually happened. >> reporter: she's now consumed with finding an answer. what else might have caused her baby's fractures? late at night, cynthia scours the web. >> i just started reading a lot of information about metabolic bone diseases and looking at ryder's case and what i know about our family, it just wasn't adding up. >> reporter: but there would be no breakthrough found online. instead, the case is about to take a strange twist. could this man, a former circus performer and a master of contortion, help solve the mystery of ryder's fractures? >> i can dislocate both arms, both legs, turn my torso 180 degrees. >> reporter: when we come back. s that cause o